Bicycle-alarm



(No Model.) 2 Sheets-Sheet 1 G. J. PAEHTZ.

BICYCLE ALARM.

No. 595,334, Patented Dec. 14,1897.

WITNESSES "IVE/ T03 @MM m 7 Arron/4m UNiiinn STATES PATENT OFFICE.

GUSTAVUS J. PAEIITZ, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF THREE-FOURTI-IS TO RICHARD E. KELLY, OF ALAMEDA, CALIFORNIA.

BICYCLE-ALARM.

SPECIFICATION forming part of Letters Patent No. 595,334, dated December 14, 1897.

Application filed March 20, 1897.

To (LZZ whom it may concern:

Be it known that I, GUsTAvUs J. PAEHTZ, a citizen of the United States, residing at San Francisco, in the county of San Francisco and 5 State of California, have invented certain new and useful Improvements in Bicycle- Alarms; and I do hereby declare the following to be a full, clear, and exact description of said invention, such as will enable others skilled in the art to which it most nearly appertains to make, use, and practice the same.

This invention relates to improvements in bicycle-alarms; and it consists in the novel construction and arrangement of the'parts I whereby the construction is made in a complete, compact, and neat form and whereby the operation of the device is effected with rapidity and with the slight movement on the part of the operator in effecting the same.

In the drawings, Figure 1 is a perspective view of the head-post forks and front wheel of bicycle having attached thereto the device herein described constructed in accordance with this invention. Fig. 2 is a detailed view,

partly in section, of the invention. Fig. 3 is a side view of the rotatable rod, showing in dotted lines the tube-shape construction of the upper end. Fig. at is a side view of the clips by means of which the invention is se- 0 cured to the bicycle and showing the perpendicular slot in the upper bearing, the construction being partly cut away to show the same.

The vibrator is mounted on a rotatable rod 3 5 which is secured in suitable bearings on one of the forks of the bicycle, that the end of the vibrator may be thrown against the spokes of the wheel. This rod in the drawings of the present construction is designated by the letter A and is constructed of a short length to fit within the bearings B B. The bearings B B are rigidly attached on the one side with the clips 0 G, which are constructed of spring or other suitable metal and are provided with screws O O, whereby the ends may be drawn together. The clips proper are provided with the side braces C O constructed of the same metal, so as to form a continuous construction, including the clips, which holds the bearings B B always in the same relation as to distance from each other.

Serial No. 628,520- (No model.)

As above stated, the rotatable rod A is mounted within these bearings, and it is secured therein by a set-screw A, which is set into a thread perforation in the bottom of the said 5 5 bar, and the head is permitted to extend through a slot B in the side of the clip B. The slot B is elongated to permit the head of the screw A to throw around a quarter, or other dimension, of an are.

To the rod A the vibrator is connected by means of a sleeve D, to which the wooden blade E of the vibrator is rigidly attached. The sleeve fits snugly over the rod A and is securely held in position by means of a setscrew D. This construction permits of adj ustment for a heavy or light contact with-the spokes of the wheel on the part of the vibrator E when the alarm is set or thrown into action.

To rotate the rod A, it is provided at the upper end with a tube-like construction, and in the sides of the tube are formed spiral or cam shaped slots A When mounted in the lower clip B, as described, the slots A are lined with perpendicular slots B in the sides of the upper bearing B. A pin F is inserted through the slots A and B in this position, and an outer sleeve or jacket G is forced down over the bearing B to hold the pin in position and also prevent the admission of dust into the tube and around the bearing B.

It is evident that if the pin F is moved upward or downward the rod A must be rotated the full limit of the sidewise extension of the spiral slots A by reason of the fact that the ends of the pin F are moving within the path of the perpendicular slots B in the sides of the bearing B. It is to move this pin F that the lifting-rod H is provided. 0

The lifting-rod H is provided at the upper end and next to the handle-bar of the machine with a finger-hook H and at the lower end with a loop Il through which the pin F is extended in mounting the parts together. 5 While this construction would provide for the lifting of the pin, it would not prove satisfactory if it would have to be depressed by hand in order that the vibrator E might be returned to its normal position away from the spokes 10 of the wheel. For this purpose there has been introduced the spiral spring I, which is mounted around the lower end of the rod H, to rest on top of the small flange H To compress the spring, the cap K is provided, which fits over the end of the bearing B and is secured thereto by any suitable means, that shown in the drawings being a screw-thread construction. The cap is provided with a small perforation fitting the rod I-I snugly.

To set the rod H on the machine, the clip L is provided on the handle-bar or the headpost of the machine. It is now evident, the vibrator E having been securely mounted in position, that by raising the rod H a very slight distance the bar A is rotated with suitable force sufficient to press the end of the vibrator E firmly against the spokes of the wheel and to produce thereby the alarma loud whirring noisewhich in some instances may be accentuated by mounting on the vibrator a small bell of the sleigh-bell style.

It will be noted that by means of the construction shown whereby the rod Ais rotated it otters a further advantage in that the vibrator E is not liable to be thrown in against the spokes of the wheel accidentally, the reason for this being that the cam or spiral slots B are so steep that they offer an almost direct resistance to the sidewise movement of the vibrator.

Having thus described this invention, it is claimed 1. Ina bicycle-alarm, such as described, in combination with a rotatable bar adapted to be mounted in hearings on the forks of the bicycle, of aresilient vibrator-blade, mounted on the said bar, the free end of which is adapted to throw into the path of the spokes of the wheel, a spiral slot cut in the end of the said rotatable bar, and a drawing-rod extending to near the handle-bar of the bicycle and provided with a pull-handle at the upper end and a pin in the lower to extend into the said slot, and a tubular bearing for the said rotatable rod having a perpendicular slot to engage the end of the pin and guide its movement, substantially as described.

2. In a bicycle-alarm, such as described in combination with a rotatable bar adapted to be mounted in hearings on the forks of the bicycle, of a resilient vibrator-blade, mounted on the said bar, the free end of which is adapted to throw into the path of the spokes of the Wheel, a spiral slot cut in the. end of the said rotatable bar, and a drawing-rod extending to near the handle-bar of the bicycle and provided with a pull-handle at the upper end and a pin in the lower to extend into the said slot, and a tubular bearing for the said rotatable rod having a perpendicular slot to engage the end of the pin and guide its movement, and a spiral spring mounted on the said drawing-bar to depress the same, substantially as described.

In testimony whereof I have hereunto set my hand this 12th day of March, 1897.

GUSTAVUS J. PAEHTZ.

Vitnesses:

BALDWIN VALE, NORMAN MOKELLAR. 

